Results 31 to 40 of about 95,824 (290)
Wavelet-Based Algorithm for Signal Analysis
EURASIP Journal on Advances in Signal Processing, 2007 This paper presents a computational algorithm for identifying power frequency variations and integer harmonics by using wavelet-based transform. The continuous wavelet transform (CWT) using the complex Morlet wavelet (CMW) is adopted to detect the ...
Lai LL, Tse Norman CF
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Coding Implementation By Using Discrete Wavelet Transform [PDF]
Engineering and Technology Journal, 2010 Image processing can be considered as an essential part of wide rangecomputer applications. This application deals with image coding and it discussesimage coding schemes, by using transforms to code the image or not.
Matheel Emad AL-Deen AL-Dargazli +1 more
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A Hybrid Robust Image Watermarking Method Based on DWT-DCT and SIFT for Copyright Protection
Journal of Imaging, 2021 In this paper, a robust hybrid watermarking method based on discrete wavelet transform (DWT), discrete cosine transform (DCT), and scale-invariant feature transformation (SIFT) is proposed.
Mohamed Hamidi +3 more
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Mathematics, 2023 We consider the computing issues of the steady probabilities for block-structured discrete-time Markov chains that are of upper-Hessenberg or lower-Hessenberg transition kernels with a continuous phase set.
Shuxia Jiang, Nian Liu, Yuanyuan Liu
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Segmentwise Discrete Wavelet Transform [PDF]
, 2012 Dizertační práce se zabývá algoritmy SegDWT pro segmentový výpočet Diskrétní Waveletové Transformace – DWT jedno i vícedimenzionálních dat. Segmentovým výpočtem se rozumí způsob výpočtu waveletové analýzy a syntézy po nezávislých segmentech (blocích) s ...
Průša, Zdeněk
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Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
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Nihon Kikai Gakkai ronbunshu, 2015 In this study, in order to verify the effectiveness of the variable-band-filters discrete wavelet transform (VBF-DWT) and construction method of the variable band filter (VBF), a fetal ECG extraction has been carried out and the main results obtained are
Zhong ZHANG +4 more
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Comparison of Image Compressions: Analog Transformations
Proceedings, 2020 A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
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Discrete-time scale-shift approach for wavelet construction and analysis
Results in Applied Mathematics, 2023 We provide a sufficient condition to construct a wavelet family from a purely discrete-time signal. The construction is based on an exact mathematical definition of the scale-shift operator in discrete-time and strongly motivated by a strict equivalence ...
Mor Ngom
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Multilevel Approach For Signal Restoration Problems With Toeplitz Matrices [PDF]
, 2010 We present a multilevel method for discrete ill-posed problems arising from the discretization of Fredholm integral equations of the first kind. In this method, we use the Haar wavelet transform to define restriction and prolongation operators within a ...
Español, Malena I., Kilmer, Misha E.
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